java - 将 jLabel move 到 jPanel 中的不同位置(类似 Pacman 的游戏)

Question

我正在制作一个像吃 bean 人这样的游戏，到目前为止我只是从网格开始。我启动了网格，但我需要弄清楚如何将某些内容 move 到网格中的不同位置，以便当用户单击或我的幽灵 move 时，它会显示在屏幕上。我如何让它 move ？我尝试了很多不同的方法，但没有一个对我有用。

import java.awt.*;

import javax.swing.*;
import javax.swing.border.BevelBorder;


public class GUI {

public static void main(String[] args) {
    final JFrame f = new JFrame("Frame Test");
    GridLayout Layout = new GridLayout(50,50);

    JPanel panel = new JPanel(new GridLayout(50, 50, 1, 1));

    //Not sure if I need this or not?
    //panel.setLayout(new GridBagLayout());

    //first set of black
    for (int i = 0; i < 1000; i++) {
        JLabel a = new JLabel(new ImageIcon("black-square.jpg"), JLabel.CENTER);
        panel.add(a);

    }

    //adds pacman
    JLabel b = new JLabel(new ImageIcon("pacman.png"), JLabel.CENTER);
    panel.add(b);

    //next set of black
    for (int i = 0; i < 1000; i++) {
        JLabel c = new JLabel(new ImageIcon("black-square.jpg"), JLabel.CENTER);
        panel.add(c);
    }


   //do the thing 
    f.setContentPane(panel);
    f.setSize(1000, 1000);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);


}

Answer 1

先看看 Concurrency in Swing和 How to Use Swing Timers

下一个问题是容器在 LayoutManager 的控制下。虽然使用它可以实现 move ，但它会是 block 状的，因为每个组件都会跳过单元格。

如果你想要流畅的 move ，你将不得不设计自己的布局逻辑，这可能会非常复杂。

尽管如此，您的目标应该是保持游戏的“虚拟” View 。这使您无需与 UI 进行大量比较即可知道迷宫的形状和角色的位置。然后你应该简单地渲染这个“虚拟” View 或模型的状态

更新了非常基本的示例

这是一个基本示例，它使用 GridLayout 和 setComponentZOrder move 到关于面板的组件...没有碰撞检测，“AI”是可怜的……

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.Timer;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

public class PacMan101 {

    public static void main(String[] args) {
        new PacMan101();
    }

    public PacMan101() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                }

                JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setLayout(new BorderLayout());
                frame.add(new MazePane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class MazePane extends JPanel {

        private JLabel pacMan;
        private JLabel ghost;

        public MazePane() {
            pacMan = new JLabel(new ImageIcon(getClass().getResource("/PacMan.png")));
            ghost = new JLabel(new ImageIcon(getClass().getResource("/Ghost.png")));

            setLayout(new GridLayout(8, 8));
            add(pacMan);

            for (int index = 1; index < (8 * 8) - 1; index++) {
                add(new JPanel() {

                    @Override
                    public Dimension getPreferredSize() {
                        return new Dimension(32, 32);
                    }

                });
            }

            add(ghost);

            Timer timer = new Timer(500, new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent e) {
                    move(pacMan);
                    move(ghost);
                    revalidate();
                    repaint();
                }

                protected void move(Component obj) {
                    int order = getComponentZOrder(obj);
                    int row = order / 8;
                    int col = order - (row * 8);

                    boolean moved = false;
                    while (!moved) {
                        int direction = (int) (Math.round(Math.random() * 3));
                        int nextRow = row;
                        int nextCol = col;
                        switch (direction) {
                            case 0:
                                nextRow--;
                                break;
                            case 1:
                                nextCol++;
                                break;
                            case 2:
                                nextRow++;
                                break;
                            case 3:
                                nextCol--;
                                break;
                        }

                        if (nextRow >= 0 && nextRow < 8 && nextCol >= 0 && nextCol < 8) {
                            row = nextRow;
                            col = nextCol;
                            moved = true;
                        }
                    }

                    order = (row * 8) + col;
                    setComponentZOrder(obj, order);

                }
            });
            timer.start();
        }

    }

}